Enable keyboard accelerators while a menu is open

ash/accelerators/accelerator_controller.cc

Index: ash/accelerators/accelerator_controller.cc
diff --git a/ash/accelerators/accelerator_controller.cc b/ash/accelerators/accelerator_controller.cc
index 51417661cfb5cee0c6204a0b246ff28421c8ba96..674aa915ed10e0750d0286439a7e7dd35d7864b6 100644
--- a/ash/accelerators/accelerator_controller.cc
+++ b/ash/accelerators/accelerator_controller.cc
@@ -720,6 +720,16 @@ void AcceleratorController::SetScreenshotDelegate(
   screenshot_delegate_ = screenshot_delegate.Pass();
 }
 
+bool AcceleratorController::ShouldCloseMenuAndRepostAccelerator(
+    const ui::Accelerator& accelerator) const {
+  auto itr = accelerators_.find(accelerator);
+  if (itr == accelerators_.end())
+    return false;  // Menu shouldn't be closed for an invalid accelerator.
+
+  AcceleratorAction action = itr->second;
+  return actions_keeping_menu_open_.count(action) == 0;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // AcceleratorController, ui::AcceleratorTarget implementation:
 
@@ -764,6 +774,8 @@ void AcceleratorController::Init() {
     actions_allowed_in_app_mode_.insert(kActionsAllowedInAppMode[i]);
   for (size_t i = 0; i < kActionsNeedingWindowLength; ++i)
     actions_needing_window_.insert(kActionsNeedingWindow[i]);
+  for (size_t i = 0; i < kActionsKeepingMenuOpenLength; ++i)
+    actions_keeping_menu_open_.insert(kActionsKeepingMenuOpen[i]);
 
   RegisterAccelerators(kAcceleratorData, kAcceleratorDataLength);